May 20, 2011

Brookhaven National Laboratory, Bldg. 725 Seminar Room

The primary objective of the workshop is to draft a Beamline Development
Proposal for National Synchrotron Light Source II for a soft x-ray
spectromicroscopy facility (SMF beamline) dedicated to the study of the
nanoscale origin of macroscopic (electrical, magnetic and optical)
properties of the matter, and the evolution of the system under relevant
conditions. The beamline is envisioned to have two branches:

(i) high energy resolution soft x-ray branch with an energy-resolving
power of R~25,000 over the energy range 301200 eV dedicated to the
measurement of electronic excitation in nano-compounds by angular resolved
photoelectron spectroscopy with spatial resolution exceeding 100nm (nano-ARPES
and -RIXS), and,

(ii) high spatial (~10nm) resolution STXM/TXM branch with moderate
energy resolving power (R~3000, E~80-2500eV), high on sample flux and
precise control over time and polarization of the photon beam

As such, two branches have complimentary scientific missions:

Spatially resolved ARPES/RIXS branch would aid the study of:

near Fermi edge band renormalization in nano-compounds

electronic excitation in novel materials, such as transition metal
oxides, where interplay between electron, spin and orbital degrees of
freedom results in electronic inhomogeneity and nanoscale phase
separations

novel phenomena, such as the origin of the states inside of
superconducting vortexes

sub-micron size functional devices (such as CNT field effect
transistors), which are beyond the sensitivity limit of the conventional
PES

STXM/TXM station will be capable

to image magnetism down to fundamental magnetic length and time
scales with elemental sensitivity in advanced multicomponent materials

to visualize chemical species distribution and their evolution in
electrochemical reactions in conditions relevant to moderate batteries
and fuel cells operation

The workshop will provide examples of the research performed at the
different x-ray microscopy facilities, explore experimental and detection
techniques successfully coupled with x-ray microscopy and identify the
needs of the user community for such a beamline.

Last Modified: May 2, 2014Please forward all questions about this site to:
Gary
Schroeder

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